Got this tip from my goog friend bing qiang on how to put Google Map in my blog with my KML file.

Upload your KML file to some webserver, mine is on Google Pages, last i heard they are not taking up new users.

Paste the link into the search box in Google Map.

Click "Search"

Your data should appear in Google Map, next click "link" on the map. Choose the iframe version

Copy the html code and paste into blogger, remember to select the "Edit Html" tab first not the Compose tab.

And the final product ! You can click on the various waypoints and see my comments. Don't forget to click on the view larger map link to see a nice panel on the left with the way points and my oyster farm trail.

View Larger Map